// https://github.com/hsuanyi-chou/shadcn-ui-expansions/tree/main

import * as React from 'react';
import { Slot } from '@radix-ui/react-slot';
import { cva, type VariantProps } from 'class-variance-authority';
import { cn } from '@/lib/utils';
import { Loader2 } from 'lucide-react';

const buttonVariants = cva(
    'inline-flex items-center justify-center rounded-md text-sm font-medium ring-offset-background transition-colors focus-visible:outline-none focus-visible:ring-2 focus-visible:ring-ring focus-visible:ring-offset-2 disabled:pointer-events-none disabled:opacity-50',
    {
        variants: {
            variant: {
                default:
                    'bg-primary text-primary-foreground hover:bg-primary/90',
                destructive:
                    'bg-destructive text-destructive-foreground hover:bg-destructive/90',
                outline:
                    'border border-input bg-background hover:bg-accent hover:text-accent-foreground',
                secondary:
                    'bg-secondary text-secondary-foreground hover:bg-secondary/80',
                ghost: 'hover:bg-accent hover:text-accent-foreground',
                link: 'text-primary underline-offset-4 hover:underline',
            },
            size: {
                default: 'h-10 px-4 py-2',
                sm: 'h-9 rounded-md px-3',
                lg: 'h-11 rounded-md px-8',
                icon: 'h-10 w-10',
            },
        },
        defaultVariants: {
            variant: 'default',
            size: 'default',
        },
    },
);

export interface ButtonProps
    extends React.ButtonHTMLAttributes<HTMLButtonElement>,
        VariantProps<typeof buttonVariants> {
    asChild?: boolean;
    loading?: boolean;
}

const LoadingButton = React.forwardRef<HTMLButtonElement, ButtonProps>(
    (
        {
            className,
            variant,
            size,
            asChild = false,
            loading,
            children,
            ...props
        },
        ref,
    ) => {
        if (asChild) {
            return (
                <Slot ref={ref} {...props}>
                    <>
                        {React.Children.map(
                            children as React.ReactElement,
                            (child: React.ReactElement) => {
                                return React.cloneElement(child, {
                                    className: cn(
                                        buttonVariants({ variant, size }),
                                        className,
                                    ),
                                    children: (
                                        <>
                                            {loading && (
                                                <Loader2
                                                    className={cn(
                                                        'size-4 animate-spin',
                                                        children && 'mr-2',
                                                    )}
                                                />
                                            )}
                                            {child.props.children}
                                        </>
                                    ),
                                });
                            },
                        )}
                    </>
                </Slot>
            );
        }

        return (
            <button
                className={cn(buttonVariants({ variant, size, className }))}
                disabled={loading}
                ref={ref}
                {...props}
            >
                <>
                    {loading && (
                        <Loader2
                            className={cn(
                                'size-4 animate-spin',
                                children && 'mr-2',
                            )}
                        />
                    )}
                    {children}
                </>
            </button>
        );
    },
);
LoadingButton.displayName = 'LoadingButton';

export { LoadingButton, buttonVariants };
